Liberty isn't any concern of the GJ at this point of time, what should be their main goals is regrouping as they're currently quite fractured inRP. In what Kaiser said, if the nodock rephack was removed for Outcasts, we'd have a lot less issues. They'd be able to bring Scrap in, while taking Cardamine out, which becomes an issue for the UC, so they'll start to take action against them.
On privateering though, Cortez and Magellan are the trade link between Bretonia and Liberty, I'm sure you'll find some good hunt there.